Virus Classification

Computer viruses can be classified based on how they spread, the files they infect, and the effect they have on systems. Understanding virus types helps implement effective protection measures.

Common types of computer viruses:

• File Infector Viruses: Attach themselves to executable files and spread when the file is run.
• Network Viruses: Spread across networks or the Internet.
• Trojans and Worms: Malicious programs disguised as legitimate software or self-replicating network threats.
• Macro Viruses: Infect documents and use macros to propagate.
• Boot Sector Viruses: Target the boot sector of storage devices.
• Polymorphic Viruses: Change their code to avoid detection.
• Resident Viruses: Embed themselves in memory to remain active.

By understanding these classifications, users and IT professionals can identify threats more effectively and take preventive actions to protect data and systems.